How are soil and fresh water resources dependent on each other?

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

The image shows embryos of three vertebrate classes

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .